Switches for appliances - Part 2-1: Particular requirements for cord switches (IEC 61058-2-1:2018)

This document applies to cord switches (mechanical or electronic) for appliances actuated by
hand, by foot or by other human activity, to operate or control electrical appliances and other
equipment for household or similar purposes with a rated voltage not exceeding 250 V and a
rated current not exceeding 16 A.
Throughout this document, the word "appliance" means "appliance or equipment".
These switches are intended to be operated by a person, via an actuating member or by
actuating a sensing unit. The actuating member or sensing unit can be integral or arranged
separately from the switch. The transmission of a signal between the actuating member or
sensing unit and the switch can be made either physically or electrically (for example,
electrical, optical, acoustic or thermal).
Switches which incorporate additional control functions governed by the switch function are
within the scope of this document.
This document also covers the indirect actuation of the switch when the operation of the
actuating member or sensing unit is provided by a remote control or a part of an appliance
such as a door.
NOTE 1 Electronic switches can be combined with mechanical switches giving full disconnection or
microdisconnection.
NOTE 2 Electronic switches without a mechanical switch in the supply circuit provide only electronic
disconnection. Therefore, the circuit on the load side is always considered to be live.
NOTE 3 For switches used in tropical climates, additional requirements can apply.
NOTE 4 Attention is drawn to the fact that the standards for appliances can contain additional or alternative
requirements for switches.

Geräteschalter - Teil 2-1: Besondere Anforderungen an Schnurschalter (IEC 61058-2-1:2018)

Interrupteurs pour appareils - Partie 2-1: Règles particulières pour les interrupteurs pour câbles souples (IEC 61058-2-1:2018)

L'IEC 61058-2-1:2018 s'applique aux interrupteurs pour câbles souples (mécaniques ou électriques) pour appareils manœuvrés à la main, au pied ou par d'autres activités humaines, pour actionner ou commander des appareils électriques et autres matériels pour usage domestique et analogue, de tension assignée ne dépassant pas 250 V et de courant assigné ne dépassant pas 16 A. Cette troisième édition annule et remplace la deuxième édition parue en 2010. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: Format global pour être compatible avec les normes IEC 61058-1, IEC 61058-1-1, IEC 61058­1­2, et les essais d'échauffement.

Stikala za aparate - 2-1. del: Posebne zahteve za vrvična stikala (IEC 61058-2-1:2018)

General Information

Status
Published
Publication Date
16-Jun-2021
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
11-Feb-2021
Due Date
18-Apr-2021
Completion Date
17-Jun-2021

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SLOVENSKI STANDARD
SIST EN IEC 61058-2-1:2021
01-julij-2021
Nadomešča:
SIST EN 61058-2-1:2011
Stikala za aparate - 2-1. del: Posebne zahteve za vrvična stikala (IEC 61058-2-
1:2018)

Switches for appliances - Part 2-1: Particular requirements for cord switches (IEC 61058-

2-1:2018)

Geräteschalter - Teil 2-1: Besondere Anforderungen an Schnurschalter (IEC 61058-2-

1:2018)

Interrupteurs pour appareils - Partie 2-1: Règles particulières pour les interrupteurs pour

câbles souples (IEC 61058-2-1:2018)
Ta slovenski standard je istoveten z: EN IEC 61058-2-1:2021
ICS:
29.120.40 Stikala Switches
SIST EN IEC 61058-2-1:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN IEC 61058-2-1:2021
---------------------- Page: 2 ----------------------
SIST EN IEC 61058-2-1:2021
EUROPEAN STANDARD EN IEC 61058-2-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2021
ICS 29.120.40 Supersedes EN 61058-2-1:2011 and all of its
amendments and corrigenda (if any)
English Version
Switches for appliances - Part 2-1: Particular requirements for
cord switches
(IEC 61058-2-1:2018)

Interrupteurs pour appareils - Partie 2-1: Exigences Geräteschalter - Teil 2-1: Besondere Anforderungen an

particulières pour les interrupteurs pour câbles souples Schnurschalter
(IEC 61058-2-1:2018) (IEC 61058-2-1:2018)

This European Standard was approved by CENELEC on 2018-07-23. CENELEC members are bound to comply with the CEN/CENELEC

Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 61058-2-1:2021 E
---------------------- Page: 3 ----------------------
SIST EN IEC 61058-2-1:2021
EN IEC 61058-2-1:2021 (E)
European foreword

The text of document 23J/432/CDV, future edition 3 of IEC 61058-2-1, prepared by SC 23J "Switches

for appliances" of IEC/TC 23 "Electrical accessories" was submitted to the IEC-CENELEC parallel

vote and approved by CENELEC as EN IEC 61058-2-1:2021.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2021-08-05

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2024-02-05

document have to be withdrawn

This document supersedes EN 61058-2-1:2011 and all of its amendments and corrigenda (if any).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

This document has been prepared under a mandate given to CENELEC by the European

Commission and the European Free Trade Association.
Endorsement notice

The text of the International Standard IEC 61058-2-1:2018 was approved by CENELEC as a

European Standard without any modification.
---------------------- Page: 4 ----------------------
SIST EN IEC 61058-2-1:2021
EN IEC 61058-2-1:2021 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments)

applies.

NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod),

the relevant EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available

here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60227 series Polyvinyl chloride insulated cables of rated - -
voltages up to and including 450/750 V -
Part 1: General requirements
IEC 60227-5 - Polyvinyl chloride insulated cables of rated - -
voltages up to and including 450/750 V --
Part 5: Flexible cables (cords)
IEC 60245 series Rubber insulated cables - Rated voltages - -
up to and including 450/750 V -- Part 1:
General requirements
IEC 60335-2-17 - Household and similar electrical appliances EN 60335-2-17 -
- Safety - Part 2-17: Particular
requirements for blankets, pads, clothing
and similar flexible heating appliances
IEC 61032 - Protection of persons and equipment by EN 61032 -
enclosures - Probes for verification
IEC 61058-1 2016 Switches for appliances - Part 1: General EN IEC 61058-1 2018
requirements
IEC 61058-1-2 2016 Switches for appliances - Part 1-2: EN 61058-1-2 2016
Requirements for electronic switches
- - +AC 2019
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SIST EN IEC 61058-2-1:2021
---------------------- Page: 6 ----------------------
SIST EN IEC 61058-2-1:2021
IEC 61058-2-1
Edition 3.0 2018-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Switches for appliances –
Part 2-1: Particular requirements for cord switches
Interrupteurs pour appareils –
Partie 2-1: Exigences particulières pour les interrupteurs pour câbles souples
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.40 ISBN 978-2-8322-5812-5

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 7 ----------------------
SIST EN IEC 61058-2-1:2021
– 2 – IEC 61058-2-1:2018 © IEC 2018
CONTENTS

FOREWORD ........................................................................................................................... 3

1 Scope .............................................................................................................................. 5

2 Normative references ...................................................................................................... 5

3 Terms and definitions ...................................................................................................... 6

4 General requirements ...................................................................................................... 6

5 General information on tests ............................................................................................ 6

6 Rating.............................................................................................................................. 6

7 Classification ................................................................................................................... 7

8 Marking and documentation ............................................................................................. 8

9 Protection against electric shock ..................................................................................... 8

10 Provision for earthing ...................................................................................................... 9

11 Terminals and terminations .............................................................................................. 9

12 Construction .................................................................................................................... 9

13 Mechanism .................................................................................................................... 15

14 Protection against ingress of solid foreign objects, ingress of water and humid

conditions ...................................................................................................................... 15

15 Insulation resistance and dielectric strength .................................................................. 15

16 Heating .......................................................................................................................... 15

17 Endurance ..................................................................................................................... 15

18 Mechanical strength ...................................................................................................... 15

19 Screws, current-carrying parts and connections ............................................................. 16

20 Clearances, creepage distances, solid insulation and coatings of rigid printed

board assemblies .......................................................................................................... 17

21 Fire hazard .................................................................................................................... 17

22 Resistance to rusting ..................................................................................................... 17

23 Abnormal operation and fault conditions for switches ..................................................... 17

24 Components for electronic switches ............................................................................... 17

25 EMC requirements ......................................................................................................... 17

Annexes ............................................................................................................................... 23

Figure 101 – Pull apparatus for testing the cord anchorage................................................... 18

Figure 102 – Apparatus for flexing test ................................................................................. 19

Figure 103 – Tumbling barrel ................................................................................................ 20

Figure 104 – Torque apparatus for testing the cord anchorage ............................................. 21

Figure 105 – Example of insulation system for a single-pole cord switch ............................... 22

Table 3 – Switch information and loads placed in groups ........................................................ 8

Table 4 – Resistive current carried by the terminal and related cross-sectional areas

of terminals for unprepared conductors ................................................................................... 9

Table 101 – Rated currents for resistor loads and related type of cords ................................ 11

Table 102 – Size of conductor............................................................................................... 14

Table 103 – Torque values for insulating material screws ..................................................... 17

---------------------- Page: 8 ----------------------
SIST EN IEC 61058-2-1:2021
IEC 61058-2-1:2018 © IEC 2018 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SWITCHES FOR APPLIANCES –
Part 2-1: Particular requirements for cord switches
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC

Publication(s)"). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 61058-2-1 has been prepared by subcommittee 23J: Switches for

appliances, of IEC technical committee 23: Electrical accessories.

This third edition cancels and replaces the second edition published in 2010 and constitutes a

technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:

Overall format to support IEC 61058-1, IEC 61058-1-1, IEC 61058-1-2, and the heating tests.

---------------------- Page: 9 ----------------------
SIST EN IEC 61058-2-1:2021
– 4 – IEC 61058-2-1:2018 © IEC 2018
The text of this International Standard is based on the following documents:
CDV Report on voting
23J/432/CDV 23J/439/RVC

Full information on the voting for the approval of this International Standard can be found in

the report on voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

This document is to be read in conjunction with IEC 61058-1:2016.

This document supplements or modifies the corresponding clauses in IEC 61058-1, so as to

convert that publication into the IEC standard: Particular requirements for cord switches.

When a particular subclause of IEC 61058-1 is not mentioned in this document, that

subclause applies as far as reasonable. Where this document states "addition", "modification"

or "replacement", the relevant text of IEC 61058-1 is to be adapted accordingly.
In this standard:
1) the following print types are used:
• requirements proper: in roman type;
• test specifications: in italic type;
• explanatory matter: in smaller roman type.

2) subclauses, notes, figures and tables which are additional to those in IEC 61058-1 are

numbered starting from 101.

A list of all parts in the IEC 61058 series, published under the general title Switches for

appliances, can be found on the IEC website.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 10 ----------------------
SIST EN IEC 61058-2-1:2021
IEC 61058-2-1:2018 © IEC 2018 – 5 –
SWITCHES FOR APPLIANCES –
Part 2-1: Particular requirements for cord switches
1 Scope
Clause 1 of IEC 61058-1:2016 is applicable except as follows:
Addition:

This document applies to cord switches (mechanical or electronic) for appliances actuated by

hand, by foot or by other human activity, to operate or control electrical appliances and other

equipment for household or similar purposes with a rated voltage not exceeding 250 V and a

rated current not exceeding 16 A.
Throughout this document, the word "appliance" means "appliance or equipment".

These switches are intended to be operated by a person, via an actuating member or by

actuating a sensing unit. The actuating member or sensing unit can be integral or arranged

separately from the switch. The transmission of a signal between the actuating member or

sensing unit and the switch can be made either physically or electrically (for example,

electrical, optical, acoustic or thermal).

Switches which incorporate additional control functions governed by the switch function are

within the scope of this document.

This document also covers the indirect actuation of the switch when the operation of the

actuating member or sensing unit is provided by a remote control or a part of an appliance

such as a door.

NOTE 1 Electronic switches can be combined with mechanical switches giving full disconnection or

micro-disconnection.

NOTE 2 Electronic switches without a mechanical switch in the supply circuit provide only electronic

disconnection. Therefore, the circuit on the load side is always considered to be live.

NOTE 3 For switches used in tropical climates, additional requirements can apply.

NOTE 4 Attention is drawn to the fact that the standards for appliances can contain additional or alternative

requirements for switches.
2 Normative references
Clause 2 of IEC 61058-1:2016 is applicable except as follows:
Addition:

IEC 60227 (all parts), Polyvinyl chloride insulated cables of rated voltages up to and including

450/750 V

IEC 60227-5, Polyvinyl chloride insulated cables of rated voltages up to and including

450/750 V – Part 5: Flexible cables (cords)

IEC 60245 (all parts), Rubber insulated cables – Rated voltages up to and including

450/750 V
---------------------- Page: 11 ----------------------
SIST EN IEC 61058-2-1:2021
– 6 – IEC 61058-2-1:2018 © IEC 2018

IEC 60335-2-17, Household and similar electrical appliances – Safety – Part 2-17: Particular

requirements for blankets, pads, clothing and similar flexible heating appliances

IEC 61032, Protection of persons and equipment by enclosures – Probes for verification

IEC 61058-1:2016, Switches for appliances – Part 1: General requirements

IEC 61058-1-2:2016, Switches for appliances – Part 1-2: Requirements for electronic switches

3 Terms and definitions
Clause 2 of IEC 61058-1:2016 is applicable except as follows:
3.3 Terms and definitions relating to the different types of switches
Addition:
3.3.101
cord switch

separately enclosed switch intended to be connected to a supply and/or to an appliance by

means of a flexible cable(s)

Note 1 to entry: The flexible cable(s) may enter the switch enclosure in any direction and may be in line with the

enclosure.
3.5 Terms and definitions relating to connections to the switch
Addition:
3.5.101
rewirable switch

switch in which the opening of the enclosure provides access to the terminals of the switch

and external conductors can be replaced
3.5.102
non-rewirable switch

switch being so constructed that it forms a constructional unit with the flexible cable after

connection and assembly, and such that the external conductors cannot be replaced without

making the switch permanently inoperable
4 General requirements
Clause 4 of IEC 61058-1:2016 is applicable.
5 General information on tests
Clause 5 of IEC 61058-1:2016 is applicable.
6 Rating
Clause 6 of IEC 61058-1:2016 is applicable except as follows:
6.1 Replacement:
---------------------- Page: 12 ----------------------
SIST EN IEC 61058-2-1:2021
IEC 61058-2-1:2018 © IEC 2018 – 7 –
The maximum rated voltage is 250 V.

Preferred values are 50 V, 130 V and 250 V. Rated voltages differing from the preferred

values are allowed.
6.2 Replacement:
The maximum rated current is 16 A.
NOTE Preferred values are 1 A; 2 A; 2,5 A; 4 A; 6 A; 10 A; 16 A.
7 Classification
Clause 7 of IEC 61058-1:2016 is applicable except as follows:
Addition:
7.101 According to the connection to the switch
7.101.1 rewirable switch;
7.101.2 non-rewirable switch.
7.102 According to the means of suspension
7.102.1 with means of suspension;
7.102.2 without means of suspension.
7.103 According to the type of cord for which the switch is suitable
7.103.1 switches suitable for the connection of round cords;
7.103.2 switches suitable for the connection of flat cords only;
7.103.3 switches suitable for the connection of both round and flat cords.
7.22 According to the type of forced cooling
Subclause 7.22.2 of IEC 61058-1:2016 does not apply.
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SIST EN IEC 61058-2-1:2021
– 8 – IEC 61058-2-1:2018 © IEC 2018
8 Marking and documentation
Clause 8 of IEC 61058-1:2016 is applicable except as follows:
Table 3 – Switch information and loads placed in groups
Addition:
Means of information
Common Unique
Characteristic Subclause
type type
reference reference
CT UT
5 TERMINALS/CONDUCTORS

5.101 If a cord switch is non-rewirable, this shall be 7.101.2 Documentat Documenta

documented. ion tion

5.102 If a cord switch is suitable for use with flat cords only, 7.103.2 Documentat Documenta

this shall be documented. ion tion
101 CATEGORY OR TYPE OF APPLIANCE WITH WHICH THE SWITCH MAY BE USED
101.1 Cord switch intended exclusively for controlling Documentati Documenta
luminaries. on tion
101.2 Category or type of appliance according to Documentati Documenta
IEC 60335-2-17 with which the switch may be used. on tion
Addition:

8.101 For cord switches intended exclusively for controlling luminaires, no "OFF" marking is

required.
9 Protection against electric shock
Clause 9 of IEC 61058-1:2016 is applicable except as follows:
9.1 Addition at the end of the subclause:

For cord switches, the test is made when the switch is fitted with cords either of the smallest

or of the largest nominal cross-sectional area specified in Table 4, whichever is more

unfavourable.
9.1.2 Replacement:

9.1.2 If a cover or cover plate or a fuse can be removed without the use of a tool, the

protection against contact with live parts shall be assured even after removal of the cover or

cover plate.

If there is a marking on the outside of the switch showing that a fuse is inside and the cover or

cover plate has to be removed with a tool, the protection against contact with live parts shall

be assured even after removal of the cover or cover plate.

If there is no marking on the outside of the switch but the instruction sheet shows that a fuse

is inside and the cover or cover plate has to be removed with a tool, either the protection

against contact with live parts shall be assured even after removal of the cover or cover plate,

or the instruction sheet shall state that the disconnection from the supply before opening shall

be performed.
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SIST EN IEC 61058-2-1:2021
IEC 61058-2-1:2018 © IEC 2018 – 9 –

Compliance is checked with the standard test finger, test probe B according to IEC 61032.

Addition:

9.101 Non-rewirable switches are tested with the cords as fitted by the manufacturer.

10 Provision for earthing
Clause 10 of IEC 61058-1:2016 is applicable except as follows:
10.1 Addition:

Terminals provided for earthing continuity are permitted if they are separated from live parts

by basic insulation and from accessible parts by supplementary insulation. An example of the

insulation system for earthing continuity is given in Figure 105.
10.3 Subclause 10.3 of IEC 61058-1:2016 does not apply.
Additional subclause:

10.101 The printed conductors of printed circuit boards may be used to provide earthing

continuity under the following conditions:

– at least two tracks are used with independent soldering points and the switch complies

with 10.4 for each track;

– the material of the printed circuit board consists of epoxide woven glass fabric copper-clad

laminated sheet;

– the printed conductors withstand the short circuit test according to Clause 23 of

IEC 61058-1-2:2016.
11 Terminals and terminations
Clause 11 of IEC 61058-1:2016 is applicable except as follows:
Replacement:
Table 4 – Resistive current carried by the terminal and related
cross-sectional areas of terminals for unprepared conductors
Resistive current carried by the terminal Flexible conductors
Cross-sectional areas
Terminal size
Minimum Medium Maximum
– 0,5 0,75 –
Over 0 up to and including 3
0,5 0,75 1,0 0
Over 3 up to and including 6
0,75 1,0 1,5 1
Over 6 up to and including 16
12 Construction
Clause 12 of IEC 61058-1:2016 is applicable except as follows:
---------------------- Page: 15 ----------------------
SIST EN IEC 61058-2-1:2021
– 10 – IEC 61058-2-1:2018 © IEC 2018
12.1 Constructional requirements relating to protection against electric shock
12.1.2 Addition:

– short rigid wires are not regarded as liable to come away from a terminal if they remain in

position when the terminal screw is loosened.
Additional subclause:

12.1.101 If solder terminals are classified according to 7.20.15, additional provisions for

securing the conductors shall be provided.
12.3 Constructional requirements relating to the mounting of switches and to the
attachment of cords
Additional subclauses:

12.3.101 Cord switches shall have cord anchorages such that the conductors are relieved

from strain, including twisting, where they are connected to the terminals, and such that the

sheath of the cord is protected from abrasion and kept in position.

12.3.102 It shall be clear how the relief from strain and the prevention of twisting is intended

to be effected.

12.3.103 Makeshift methods such as tying the cord into a knot, or tying the ends with string

shall not be used.

12.3.104 Cord anchorages of cord switches shall be of insulating material, or, if of metal,

shall be insulated from accessible metal parts or accessible insulating surfaces by insulation

complying with the requirements for supplementary insulation.

12.3.105 For rewirable cord switches, the cord anchorages shall be so designed that their

parts do not fall out when the cover of the switch is removed even if the switches are not fitted

with their cords.
12.3.106 Cord anchorages shall be so designed that:

– for any attachment method, the cord is not fixed by penetration of its insulation in such a

way that the insulation of the cord is cut or otherwise significantly damaged;

– a soft deformation of the insulation in such a way that the insulation of the cord is not cut

or otherwise significantly damaged is allowed;

– the cord cannot touch clamping screws of the cord anchorage if these screws are

accessible or electrically connected to accessible metal parts;

– the cord is not clamped by a screw which bears directly on the cord, except where the

screw is made of insulating material;
– for rewirable switches, at least one part is securely fixed to the switch;

– for rewirable switches, replacement of the cord does not require the use of a special

purpose tool;

– for rewirable switches, they are suitable for the different types of cords which may be

connected.

12.3.107 Cord anchorages for rewirable switches shall be so designed and located that

replacement of the cord is easy.
---------------------- Page: 16 ----------------------
...

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